tests: move update requiredest test to own test file

More tests for this flag are coming in upcoming patches.

tests/test-update-dest.t

@@ -0,0 +1,23 b''
+Test update.requiredest
+  $ cd $TESTTMP
+  $ cat >> $HGRCPATH <<EOF
+  > [commands]
+  > update.requiredest = True
+  > EOF
+  $ hg init repo
+  $ cd repo
+  $ echo a >> a
+  $ hg commit -qAm aa
+  $ hg up
+  abort: you must specify a destination
+  (for example: hg update ".::")
+  [255]
+  $ hg up .
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ HGPLAIN=1 hg up
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+  $ hg --config commands.update.requiredest=False up
+  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
+
+  $ cd ..
+

tests/test-update-names.t

@@ -1,110 +1,90 b''
 Test update logic when there are renames or weird same-name cases between dirs
 and files
 
 Update with local changes across a file rename
 
   $ hg init r1 && cd r1
 
   $ echo a > a
   $ hg add a
   $ hg ci -m a
 
   $ hg mv a b
   $ hg ci -m rename
 
   $ echo b > b
   $ hg ci -m change
 
   $ hg up -q 0
 
   $ echo c > a
 
   $ hg up
   merging a and b to b
   warning: conflicts while merging b! (edit, then use 'hg resolve --mark')
   0 files updated, 0 files merged, 0 files removed, 1 files unresolved
   use 'hg resolve' to retry unresolved file merges
   [1]
 
 Test update when local untracked directory exists with the same name as a
 tracked file in a commit we are updating to
   $ hg init r2 && cd r2
   $ echo root > root && hg ci -Am root  # rev 0
   adding root
   $ echo text > name && hg ci -Am "name is a file"  # rev 1
   adding name
   $ hg up 0
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ mkdir name
   $ hg up 1
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 
 Test update when local untracked directory exists with some files in it and has
 the same name a tracked file in a commit we are updating to. In future this
 should be updated to give an friendlier error message, but now we should just
 make sure that this does not erase untracked data
   $ hg up 0
   0 files updated, 0 files merged, 1 files removed, 0 files unresolved
   $ mkdir name
   $ echo text > name/file
   $ hg st
   ? name/file
   $ hg up 1
   abort: *: '$TESTTMP/r1/r2/name' (glob)
   [255]
   $ cd ..
 
 #if symlink
 
 Test update when two commits have symlinks that point to different folders
   $ hg init r3 && cd r3
   $ echo root > root && hg ci -Am root
   adding root
   $ mkdir folder1 && mkdir folder2
   $ ln -s folder1 folder
   $ hg ci -Am "symlink to folder1"
   adding folder
   $ rm folder
   $ ln -s folder2 folder
   $ hg ci -Am "symlink to folder2"
   $ hg up 1
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ cd ..
 
 #endif
 
 #if rmcwd
 
 Test that warning is printed if cwd is deleted during update
   $ hg init r4 && cd r4
   $ mkdir dir
   $ cd dir
   $ echo a > a
   $ echo b > b
   $ hg add a b
   $ hg ci -m "file and dir"
   $ hg up -q null
   current directory was removed
   (consider changing to repo root: $TESTTMP/r1/r4)
 
 #endif
-
-  $ cd $TESTTMP
-  $ cat >> $HGRCPATH <<EOF
-  > [commands]
-  > update.requiredest = True
-  > EOF
-  $ hg init dest
-  $ cd dest
-  $ echo a >> a
-  $ hg commit -qAm aa
-  $ hg up
-  abort: you must specify a destination
-  (for example: hg update ".::")
-  [255]
-  $ hg up .
-  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
-  $ HGPLAIN=1 hg up
-  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
-  $ hg --config commands.update.requiredest=False up
-  0 files updated, 0 files merged, 0 files removed, 0 files unresolved